Flatten PDF
Make form fields and annotations a permanent part of the page.
This tool runs entirely in your browser. Your file is never sent anywhere.
Interactive form fields, comments and layers are merged into the flat page content, so your PDF looks identical everywhere and can no longer be edited by others.
Frequently asked questions
What happens to filled form fields?
Their current values become permanent printed text; the form itself is no longer interactive.
Does this work on PDFs without a form?
Yes — if there's nothing to flatten, the file is simply re-saved unchanged.